CN114553025B - Method and device for detecting and feeding back electric energy parameters of DALI power supply - Google Patents

Method and device for detecting and feeding back electric energy parameters of DALI power supply Download PDF

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CN114553025B
CN114553025B CN202210219448.7A CN202210219448A CN114553025B CN 114553025 B CN114553025 B CN 114553025B CN 202210219448 A CN202210219448 A CN 202210219448A CN 114553025 B CN114553025 B CN 114553025B
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power
data
actual
circuit
output
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CN114553025A (en
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郑德华
赵显云
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Zhuhai Shengchang Electronics Co ltd
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Zhuhai Shengchang Electronics Co ltd
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
    • H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
    • H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/40—Testing power supplies
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/08—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters
    • H02M1/081—Circuits specially adapted for the generation of control voltages for semiconductor devices incorporated in static converters wherein the phase of the control voltage is adjustable with reference to the AC source
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/12—Arrangements for reducing harmonics from ac input or output
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M1/00—Details of apparatus for conversion
    • H02M1/36—Means for starting or stopping converters
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection

Abstract

The invention relates to a method and a device for detecting and feeding back electric energy parameters of a DALI power supply. The circuit structure can be simplified without detecting the input current, the cost is saved, and the parameter information of the power supply can be relatively accurately fed back to the DALI control system.

Description

Method and device for detecting and feeding back electric energy parameters of DALI power supply
Technical Field
The invention relates to the technical field of power supply detection, in particular to a method and a device for detecting and feeding back electric energy parameters of a DALI power supply.
Background
Along with the internet of things and smart lighting becoming more marketable, the application of the DALI intelligent lighting control system is wider and wider, and the DALI intelligent lighting control system has the advantages of being strong in anti-interference performance, having fault feedback, having a standard protocol, having special authentication and the like, and is favored by the market. With the continuous development of DALI intelligent lighting technology, DALI adds a function set of D4i, and D4i is a function set with integrated bus power supply, memory bank expansion, power reporting, diagnosis and maintenance. Where diagnostics and maintenance and power reporting require the input and output parameters of the DALI power supply to be detected and fed back.
Many manufacturers do not fully implement the function of D4i, particularly the function of detecting and feeding back input and output parameters, such as input voltage, input frequency, power factor, active power, apparent power, etc. Some manufacturers have to put a fixed value directly, and the system reading is a fixed value no matter how the input voltage changes and the output power changes.
Disclosure of Invention
To overcome the deficiencies of the prior art, it is an object of the present invention to provide a method and apparatus for power parameter detection and feedback for a DALI power supply.
In order to achieve the purpose, the invention provides the following scheme:
a method of power parameter detection and feedback for a DALI power supply, comprising:
constructing a power source data set; the power supply data set comprises a plurality of pre-stored input voltage data, output power data, power factor data and efficiency data of the power supply under the conditions of different input voltages and different output powers;
acquiring actual input voltage, actual input frequency, actual output voltage and actual output current when a power supply is powered on;
inquiring data in the power supply data set according to the actual input voltage to obtain input voltage data with the minimum difference value with the actual input voltage; obtaining actual output power according to the actual output voltage and the actual output current, and searching data in the power supply data set according to the actual output power to obtain output power data with the minimum difference value with the actual output power; inquiring data in the power supply data set according to the inquired input voltage data and the output power data to obtain corresponding power factor data and efficiency data;
obtaining input apparent power and active power according to the inquired output power data, the power factor data and the efficiency data;
and sending the obtained actual input voltage, the actual input frequency, the actual output voltage, the actual output current, the actual output power, the inquired power factor data, the efficiency data, the input apparent power and the active power to a DALI control system so that the DALI control system inquires power supply parameter information.
Preferably, the obtaining input apparent power and active power according to the queried output power data, power factor data and efficiency data includes:
according to formula P 1 ＝P 2 Dividing eta to obtain said active power(ii) a Wherein, P 1 For said active power, P 2 Is the output power data, η is the efficiency data;
according to the formula P 3 ＝P 2 Obtaining the input apparent power by dividing eta/lambda; wherein, P 3 Is the input apparent power; λ is the power factor data.
An apparatus for implementing the above method for detecting and feeding back power parameters of a DALI power supply comprises: the device comprises a switching power supply circuit, an electromagnetic filter circuit, a DALI dimming control circuit, an output parameter detection circuit, an input voltage detection circuit, a single chip microcomputer circuit and a DALI signal processing circuit;
the electromagnetic filter circuit is respectively connected with the switch power circuit and the input voltage detection circuit, the switch power circuit is connected with the DALI dimming control circuit, the DALI dimming control circuit is connected with the output parameter detection circuit, and the single chip microcomputer circuit is respectively connected with the input voltage detection circuit, the output parameter detection circuit and the DALI signal processing circuit;
the electromagnetic filter circuit is used for inputting commercial power into the switch power circuit and the input voltage detection circuit, and the switch power circuit is used for supplying power to the DALI dimming control circuit; the DALI dimming control circuit is used for outputting energy to an external lamp; the input voltage detection circuit is used for sampling and detecting actual input voltage and actual input frequency; the output parameter detection circuit is used for sampling and detecting actual output voltage and actual output current output by the DALI dimming control circuit; a power supply data set is integrated in the single chip microcomputer circuit, and the single chip microcomputer is used for inquiring data in the power supply data set according to the actual input voltage to obtain input voltage data with the minimum difference value with the actual input voltage; obtaining actual output power according to the actual output voltage and the actual output current, and searching data in the power supply data set according to the actual output power to obtain output power data with the minimum difference value with the actual output power; inquiring data in the power supply data set according to the inquired input voltage data and the output power data to obtain corresponding power factor data and efficiency data; obtaining input apparent power and active power according to the inquired output power data, the power factor data and the efficiency data; the DALI signal processing circuit is used for receiving the actual input voltage, the actual input frequency, the actual output voltage, the actual output current, the actual output power and the inquired power factor data, the efficiency data and the input apparent power and the active power which are sent by the single chip microcomputer according to an inquired power parameter signal sent by a DALI control system, and sending the actual input voltage, the actual input frequency, the actual output voltage, the actual output current, the inquired power factor data, the inquired efficiency data and the inquired active power to the DALI control system; the single chip microcomputer circuit also outputs a dimming signal to the DALI dimming control circuit; the DALI signal processing circuit also has the function of passing dimming commands and other data signals.
According to the specific embodiment provided by the invention, the invention discloses the following technical effects:
the invention provides a method and a device for detecting and feeding back electric energy parameters of a DALI power supply, which can obtain relatively accurate output power, efficiency, power factor, input active power and input apparent power by detecting input voltage, output voltage and output current under the condition of not detecting input current, and report the data information to a DALI control system. The circuit structure can be simplified without detecting the input current, the cost is saved, and the parameter information of the power supply can be relatively accurately fed back to the DALI control system.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
FIG. 1 is a flow chart of a method in an embodiment provided by the present invention;
FIG. 2 is a diagram of an application process in an embodiment provided by the present invention;
fig. 3 is a circuit configuration diagram in an embodiment provided by the present invention.
Description of the symbols:
the device comprises an electromagnetic filter circuit 1, a switching power supply circuit 2, a DALI dimming control circuit 3, an input voltage detection circuit 4, an output parameter detection circuit 5, a single chip microcomputer circuit 6, a DALI signal processing circuit 7 and an integral device 10.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
The terms "first," "second," "third," and "fourth," etc. in the description and claims of this application and in the accompanying drawings are used for distinguishing between different objects and not for describing a particular order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, the inclusion of a list of steps, processes, methods, etc. is not limited to only those steps recited, but may alternatively include additional steps not recited, or may alternatively include additional steps inherent to such processes, methods, articles, or devices.
The invention aims to provide a method and a device for detecting and feeding back power parameters of a DALI power supply, which can feed back the parameter information of the power supply to a DALI control system relatively accurately.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Fig. 1 is a flow chart of a method in an embodiment of the present invention, and as shown in fig. 1, the present invention provides a method for power parameter detection and feedback of a DALI power supply, comprising:
step 100: constructing a power source data set; the power supply data set comprises a plurality of pre-stored input voltage data, output power data, power factor data and efficiency data of the power supply under the conditions of different input voltages and different output powers;
step 200: acquiring actual input voltage, actual input frequency, actual output voltage and actual output current when a power supply is powered on;
step 300: inquiring data in the power supply data set according to the actual input voltage to obtain input voltage data with the minimum difference value with the actual input voltage; obtaining actual output power according to the actual output voltage and the actual output current, and searching data in the power supply data set according to the actual output power to obtain output power data with the minimum difference value with the actual output power; inquiring data in the power supply data set according to the inquired input voltage data and the output power data to obtain corresponding power factor data and efficiency data;
step 400: obtaining input apparent power and active power according to the inquired output power data, the power factor data and the efficiency data;
step 500: and sending the obtained actual input voltage, the actual input frequency, the actual output voltage, the actual output current, the actual output power, the inquired power factor data, the efficiency data, the input apparent power and the active power to a DALI control system so that the DALI control system inquires power supply parameter information.
Preferably, the step 400 comprises:
according to formula P 1 ＝P 2 Obtaining the active power by dividing eta; wherein, P 1 For said active power, P 2 Is the output power data, η is the efficiency data;
according to the formula P 3 ＝P 2 Obtaining the input apparent power by dividing eta/lambda; wherein, P 3 Is the input apparent power; λ is the power factor data.
Fig. 2 is a diagram of an application process in the embodiment of the present invention, and as shown in fig. 2, the process in the embodiment includes six steps, which are specifically as follows:
the method comprises the following steps: the method comprises the steps that input voltage data, output power data, and data of power factors and efficiency of a power supply under the conditions of different input voltages and different output powers are stored in a power supply single chip microcomputer system in advance;
step two: when the power supply is powered on, detecting input voltage and input frequency, and inquiring and taking out pre-stored input voltage data which is similar to the detected input voltage value;
step three: when the power supply is powered on, the output voltage and the output current value are detected at the same time, the single chip microcomputer calculates the corresponding output power value, and then pre-stored output power data close to the calculated output power value are inquired and taken out;
step four: inquiring corresponding power factor and efficiency under the conditions of the input voltage and the output power to obtain corresponding power factor and efficiency data;
step five: and calculating input apparent power and active power according to the obtained power factor and efficiency, wherein the input active power is output power divided by the efficiency, and the input apparent power is output power divided by the efficiency divided by the power factor.
Step six: when the DALI control system inquires the parameter information of the power supply, the power supply feeds back parameters such as input voltage, input frequency, output voltage, output current, output power, power factor, efficiency, active power, apparent power and the like obtained by detection or inquiry to the DALI control system.
Fig. 3 is a circuit configuration diagram in an embodiment provided by the present invention, and as shown in fig. 3, the present invention further provides an apparatus for implementing the above method for detecting and feeding back the power parameter of a DALI power supply, and the overall apparatus 10 includes: the device comprises a switching power supply circuit 2, an electromagnetic filter circuit 1, a DALI dimming control circuit 3, an output parameter detection circuit 5, an input voltage detection circuit 4, a singlechip circuit 6 and a DALI signal processing circuit 7;
the electromagnetic filter circuit 1 is respectively connected with the switch power circuit 2 and the input voltage detection circuit 4, the switch power circuit 2 is connected with the DALI dimming control circuit 3, the DALI dimming control circuit 3 is connected with the output parameter detection circuit 5, and the single chip circuit 6 is respectively connected with the input voltage detection circuit 4, the output parameter detection circuit 5 and the DALI signal processing circuit 7;
the electromagnetic filter circuit 1 is used for inputting mains supply into the switching power supply circuit 2 and the input voltage detection circuit 4, and the switching power supply circuit 2 is used for supplying power to the DALI dimming control circuit 3; the DALI dimming control circuit 3 is used for outputting energy to an external lamp; the input voltage detection circuit 4 is used for sampling and detecting actual input voltage and actual input frequency; the output parameter detection circuit 5 is configured to sample and detect an actual output voltage and an actual output current output by the DALI dimming control circuit 3; a power source data set is integrated in the single chip microcomputer circuit 6, and the single chip microcomputer is used for inquiring data in the power source data set according to the actual input voltage to obtain input voltage data with the minimum difference value with the actual input voltage; obtaining actual output power according to the actual output voltage and the actual output current, and searching data in the power supply data set according to the actual output power to obtain output power data with the minimum difference value with the actual output power; inquiring data in the power supply data set according to the inquired input voltage data and the output power data to obtain corresponding power factor data and efficiency data; obtaining input apparent power and active power according to the inquired output power data, the power factor data and the efficiency data; the DALI signal processing circuit 7 is configured to receive the actual input voltage, the actual input frequency, the actual output voltage, the actual output current, the actual output power, the queried power factor data, the efficiency data, the input apparent power and the active power, which are sent by a single chip microcomputer, according to a query power parameter signal sent by a DALI control system, and send the received actual input voltage, the actual input frequency, the actual output voltage, the actual output current, the queried power factor data, the efficiency data, the input apparent power and the active power to the DALI control system; the singlechip circuit 6 also outputs a dimming signal to the DALI dimming control circuit 3; the DALI signal processing circuit 7 also has a function of transferring a dimming instruction and other data signals.
Specifically, the circuit principle of the present embodiment is as follows:
after the mains supply is input into the DALI power supply, one path of the mains supply is input into the switch power supply circuit 2 through the electromagnetic filter circuit 1, and the other path of the mains supply is input into the input voltage detection circuit 4; the switch power supply provides required electric energy for each circuit, and the input voltage detection circuit 4 samples and detects the voltage value and frequency of the input voltage and transmits the voltage value and frequency to the singlechip circuit 6; the switch power circuit 2 outputs power to the DALI dimming control circuit 3, and the DALI dimming control circuit 3 outputs energy to an external lamp and performs dimming control; the output parameter detection circuit 5 samples and detects the voltage and current output by the DALI dimming control circuit 3 and other parameter signals and transmits the signals to the singlechip circuit 6; the single chip circuit 6 receives and processes the signals transmitted by the input voltage detection circuit 4 and the signals transmitted by the output parameter detection circuit 5, and then processes the signals to obtain data information of the power supply, such as input voltage, frequency, output voltage, output current, output power, efficiency, power factor, active power, apparent power and the like. When the DALI control system inquires the parameter information of the power supply, the DALI bus is informed to send an instruction to the power supply, the instruction is transmitted to the single chip microcomputer circuit 6 through the DALI signal processing circuit 7, the parameter information of the power supply can be transmitted back to the DALI control system after the single chip microcomputer receives the instruction, and the data sent by the single chip microcomputer circuit 6 is transmitted to the DALI control system connected to the DALI bus after passing through the DALI signal processing circuit 7. The DALI control system displays power parameter information of the power source, etc. through the display device.
Further, the single chip microcomputer circuit 6 can process and upload data such as input voltage, frequency, output voltage, output current, output power, efficiency, power factor, active power, apparent power and the like to the DALI control system, and can also process and upload data such as: the power supply accumulates data of the D4i function sets such as working time, overall fault condition, number of faults, whether the input voltage is too high, number of times the input voltage is too high, etc., and only some of the functions are listed in the invention, but not limited thereby.
The invention has the following beneficial effects:
under the condition of not detecting input current, the invention can obtain relatively accurate output power, efficiency, power factor, input active power and input apparent power by only detecting input voltage, output voltage and output current, and report the data information to a DALI control system. The circuit structure can be simplified without detecting the input current, the cost is saved, and the parameter information of the power supply can be relatively accurately fed back to the DALI control system.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
The principles and embodiments of the present invention have been described herein using specific examples, which are provided only to help understand the method and the core concept of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.

Claims (3)

1. A method for power parameter detection and feedback for a DALI power supply, comprising:
constructing a power source data set; the power supply data set comprises a plurality of pre-stored input voltage data, output power data, power factor data and efficiency data of the power supply under the conditions of different input voltages and different output powers;
acquiring actual input voltage, actual input frequency, actual output voltage and actual output current when a power supply is powered on;
inquiring data in the power supply data set according to the actual input voltage to obtain input voltage data with the minimum difference value with the actual input voltage; obtaining actual output power according to the actual output voltage and the actual output current, and searching data in the power supply data set according to the actual output power to obtain output power data with the minimum difference value with the actual output power; inquiring data in the power supply data set according to the inquired input voltage data and the output power data to obtain corresponding power factor data and efficiency data;
obtaining input apparent power and active power according to the inquired output power data, the power factor data and the efficiency data;
and sending the obtained actual input voltage, the actual input frequency, the actual output voltage, the actual output current, the actual output power, the inquired power factor data, the efficiency data, the input apparent power and the active power to a DALI control system so that the DALI control system inquires power supply parameter information.
2. The method of claim 1, wherein said deriving input apparent power and active power from said queried output power data, said power factor data, and said efficiency data, comprises:
according to formula P 1 ＝P 2 Obtaining the active power by dividing eta; wherein, P 1 For said active power, P 2 Is the output power data, η is the efficiency data;
according to formula P 3 ＝P 2 Obtaining the input apparent power by dividing eta/lambda; wherein, P 3 Is the input apparent power; λ is the power factor data.
3. An apparatus implementing the method for power parameter detection and feedback for a DALI power supply of any of claims 1 to 2, the apparatus comprising: the device comprises a switching power supply circuit, an electromagnetic filter circuit, a DALI dimming control circuit, an output parameter detection circuit, an input voltage detection circuit, a single chip microcomputer circuit and a DALI signal processing circuit;
the electromagnetic filter circuit is respectively connected with the switch power circuit and the input voltage detection circuit, the switch power circuit is connected with the DALI dimming control circuit, the DALI dimming control circuit is connected with the output parameter detection circuit, and the single chip microcomputer circuit is respectively connected with the input voltage detection circuit, the output parameter detection circuit and the DALI signal processing circuit;
the electromagnetic filter circuit is used for inputting commercial power into the switch power circuit and the input voltage detection circuit, and the switch power circuit is used for supplying power to the DALI dimming control circuit; the DALI dimming control circuit is used for outputting energy to an external lamp; the input voltage detection circuit is used for sampling and detecting actual input voltage and actual input frequency; the output parameter detection circuit is used for sampling and detecting actual output voltage and actual output current output by the DALI dimming control circuit; a power supply data set is integrated in the single chip microcomputer circuit, and the single chip microcomputer is used for inquiring data in the power supply data set according to the actual input voltage to obtain input voltage data with the minimum difference value with the actual input voltage; obtaining actual output power according to the actual output voltage and the actual output current, and searching data in the power supply data set according to the actual output power to obtain output power data with the minimum difference value with the actual output power; inquiring data in the power supply data set according to the inquired input voltage data and the output power data to obtain corresponding power factor data and efficiency data; obtaining input apparent power and active power according to the inquired output power data, the power factor data and the efficiency data; the DALI signal processing circuit is used for receiving the actual input voltage, the actual input frequency, the actual output voltage, the actual output current, the actual output power and the actual output power, the power factor data, the efficiency data, the input apparent power and the active power which are inquired and sent by a single chip microcomputer according to an inquiry power parameter signal sent by a DALI control system, and sending the actual input voltage, the actual input frequency, the actual output voltage, the actual output current, the actual output power and the input apparent power and the active power to the DALI control system.
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